00505nam a2200169 a 450000500170000002000150001708200160003210000150004824500450006326000440010830000240015269000270017696400260020399700190022999900170024895200700026520251203110318.0  a0486406784  a515.35bBEA  aBear, H.S.  aDifferential equationsba concise course  aNew YorkbDover Publications, Incc1999  aviii,207p.c20cm PB  aDifferential equations  bENGLISHcd515efg_  a104709 LIBSC C  c85449d85449  00104070aPUbPUd2002-04-05g388.74l0o515.35 BEAp104709yBK